George d



(No Model.) I

G. D. FERRIS.

- BIGYGLB. l No. 35.4.,777.` Patented Deo. 21, 1886.

wzness# Invent.-

NiTED STATES ATENT irren'.-

GEORGE D. FER-RIS, OF SPRINGFIELD, ILLINOIS.

BICYCLE.

SPECIFICATION forming part of Letters .Patent No. 354,777, datedDecember 21, 1886. Application filed August 28, 1886. Serial No.212,067. (No model.)

To all whom t may concern:

Beit known that I, GEORGE D. FERRIs, a citizen of theUnited States,residing atSpring field, in the county of Sangamon and State ofIllinois, have invented a new and useful Improvement in Bicycle-Vheels,of which thev following is a specification. Y

This invention has for its object to provide novel gearing for.revolving the propellingwheel of a bicycle; and it consists in thecombination, with the arms comprising the yoke or fork of a bicycle, oftwo disks secured, respectively, to said arms, and each having aninternal annular row of teeth, a sleeve journaled in the arms andcarrying the propellingwheel, which travels on the surface to betraversed, a gear-wheel attached to each end of the sleeve, a shaftextending through the sleeve, two levers mounted, respectively,intermediate their ends on the ends of the shaft, a crank at one end ofeach lever, and a pin ion journaled on the other end of each lever, saidpinions meshing with the gear-wheels on the sleeve and with the annularrows of teeth of the disks, whereby the rotation of the crank-leverswith the shaft causes the pinions to be revolved by the toothed disks,and such pinions revolve the gear-wheels, sleeve, and driving-Wheel forpropelling the bicycle at great speed.

The invention is illustrated in the accompanying drawings, in whichFigure l is a side elevation of the driving-gear, showing the lower endportions of a bicycle fork or yoke and a part of the propelling-wheel;Fig. 2, a transverse sectional view through the shaft and sleeve at onesideof the propelling wheel, Fig. 3, a front elevation, and Fig. i alongitudinal sectional view through the fork or yoke.

In order to enable those skilled in the art to make and use myinvention, I will now describey the same in detail, referring to thedrawings, where- The letters A'indicate the arms comprising the fork oryoke of a bicycle, which in practice is usually provided with a post atits upper end journaled in the backbone or reach and connected with thesteering handles. These parts, however, being of well-knownconstruction, it is not deemed necessary to illustrate them in thedrawings.

To the outside of each arm A is rigidly secured, by screwbolts orotherwise, a disk or ring, B, having an internal annular row of teeth,and in the arms is journaled a sleeve, E, carrying at each end arigidly-attached gear-wheel, D, for which purpose the ends of the sleeveproject beyond the outside of the arms. A shaft, S, extends through thesleeve and projects beyond the ends thereof, and on each projecting endis mounted a lever, L, such levers `being secured to the shaftintermediate their ends, so that each lever comprises two partsextending in opposite directionsfrom theshaft. To one end of each leveris journaled, by a suitable stud, a pinion, C, and to the oppositeend ofeach lever is secured a crank, T, the pinions meshing, respectively,with the gear-wheels on the sleeve and with the internal annular rows ofteeth of the disks. By revolving the levers through the medium of theircranks the pinions C are caused to traverse the teeth of the disks B,and are thereby revolved on their axes, and such revolving movement isdirectly transmitted to the gear-wheels D, thus revolving the sleeve Eand the propelling-wheel s, the hub F of which is secured to the sleeve.The propelling-wheel is thus caused to rotate on the surface to betraversed and the bicycle propelled with considerable speed withoutundue exertion.

I am aware of Letters Patent No. 293,081, and do not wish to beunderstood as claiming what is therein disclosed, as such is not myinvention. l

Having thus described myinvention, what I l. rIhe combination, with thearms comprising the fork or yoke of a bicycle, of two internally-tootheddisks secured, respectively, to said arms, a sleeve journaled in thearms and carrying the propelling wheel, Which travels on the surface tobe traversed, a gearwheel attached to each end of t-he sleeve, torevolve therewith, a shaft extending through the sleeve, two leversmounted, respectively, intermediate their ends on the ends ofthe shaft,a crank at one end of each lever,'and a IOO pinion journaled on theopposite end of each each shaft and a pinion at the opposite end oflever, said pinions engaging the gear-wheels l each shaft, said pinionsengaging the interand the internally-toothed disks to propel thenally-toothed disks and the gear-Wheels to re- 15 bicycle by therevolution of the crank-levers, volve the propelling-wheel by therevolution 5 substantially as described. of the crank-levers,substantially as described. 2. The combination of the two stationary Intestimony whereof I have affixed my sigand internally-toothed disks, asleeve carrying nature in the presence of two witnesses. apropelling-wheel, a gear-wheel secured to each end of the sleeve, torevolve therewith, a GEORGE D FERRIS' xo shaft extending through thesleeve, two levers Vitnesses:

mounted, respectively, intermediate their ends G. B. THORNBERRY, on theends of the shaft, a crank at one end of l BENJAMIN F. CRoUsE.

